WO2012079410A1 - 一种终端实时视频图像获取方法和装置 - Google Patents

一种终端实时视频图像获取方法和装置 Download PDF

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Publication number
WO2012079410A1
WO2012079410A1 PCT/CN2011/080567 CN2011080567W WO2012079410A1 WO 2012079410 A1 WO2012079410 A1 WO 2012079410A1 CN 2011080567 W CN2011080567 W CN 2011080567W WO 2012079410 A1 WO2012079410 A1 WO 2012079410A1
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WO
WIPO (PCT)
Prior art keywords
terminal
light intensity
current environment
real
acquiring
Prior art date
Application number
PCT/CN2011/080567
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English (en)
French (fr)
Inventor
杨志兵
Original Assignee
惠州Tcl移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 惠州Tcl移动通信有限公司 filed Critical 惠州Tcl移动通信有限公司
Priority to US13/805,314 priority Critical patent/US8982178B2/en
Priority to EP11848823.8A priority patent/EP2654273A4/en
Publication of WO2012079410A1 publication Critical patent/WO2012079410A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of video technologies, and in particular, to a terminal real-time video image acquisition method and apparatus.
  • the video is too dark or the picture cannot be seen because the light is too dark, which not only affects the effect of the video call, but also because the image is still invisible.
  • the acquisition of real-time video images is a great waste of power.
  • the technical problem to be solved by the present invention is to provide a method and a device for acquiring a real-time video image of a terminal, so as to ensure the quality of the video call under the condition of weak light, save power, and enhance the user experience.
  • the technical solution adopted by the present invention to solve the technical problem is to provide a method for acquiring a real-time video image of a terminal, the method comprising the steps of: acquiring light of a current environment and converting it into a corresponding level signal, and according to the Corresponding relationship between the level signal and the light intensity to match the light intensity of the current environment; and comparing the light intensity of the current environment with the light intensity threshold set by the terminal system Obtaining, if the light intensity of the current environment is lower than a light intensity threshold set by the terminal system, acquiring an image preset by the terminal, and transmitting the preset image to the current communication with the terminal Receiving party; if the light intensity of the current environment is greater than or equal to the light intensity threshold set by the terminal system, the camera device controlling the terminal acquires a real-time video image.
  • the preset image of the terminal includes a video stream intercepted by the terminal during a video call or a picture stored by the terminal.
  • the light intensity of the current environment is obtained, the light intensity of the current environment is periodically obtained according to the time value set by the terminal system.
  • the technical solution of the present invention is to provide another terminal real-time video image acquisition method, and the method includes the following steps: when acquiring a real-time video image, the terminal acquires the light intensity of the current environment; Comparing the light intensity with the light intensity threshold set by the terminal system; if the light intensity of the current environment is lower than the light intensity threshold set by the terminal system, acquiring the preset image of the terminal, and The preset image is sent to the recipient currently communicating with the terminal.
  • the preset image of the terminal includes a video stream intercepted by the terminal during a video call or a picture stored by the terminal.
  • the step of acquiring the light intensity of the current environment when the terminal acquires the real-time video image specifically includes: acquiring the light of the current environment; converting the light of the current environment into a corresponding level signal; according to the level signal and the light intensity Correspondence, matching the light intensity of the current environment.
  • the method further includes: if the light intensity of the current environment is greater than or equal to the light intensity threshold set by the terminal system, the control terminal The camera device acquires a live video image.
  • the light intensity of the current environment is obtained, the light intensity of the current environment is periodically obtained according to the time value set by the terminal system.
  • the technical solution of the present invention is to provide a real-time video image acquisition device for a terminal, and the device includes: a light intensity acquisition module, configured to acquire a light intensity of a current environment when the terminal acquires a real-time video image;
  • the light intensity judging module is configured to compare the light intensity of the current environment with the light intensity threshold set by the terminal system; and the image acquisition switching module is configured to: when the light intensity of the current environment is lower than the light intensity threshold set by the terminal system, Obtaining an image preset by the terminal;
  • a video calling module configured to send the preset image to a receiver currently communicating with the terminal.
  • the preset image of the terminal includes a video stream or a terminal intercepted by the terminal during a video call. Stored pictures.
  • the light intensity acquiring module specifically includes: a light acquiring module, configured to obtain light of a current environment; a light converting module, configured to convert light of a current environment into a corresponding level signal; and a light intensity matching module, configured to The correspondence between the signal and the light intensity matches the light intensity of the current environment.
  • the light intensity acquiring module periodically acquires the light intensity of the current environment according to the time value set by the terminal system.
  • the technical solution for solving the technical problem is to provide a terminal, comprising: a light sensor for sensing light of a current environment; and a light intensity acquiring module, configured to acquire a current environment when the terminal acquires a real-time video image a light intensity determination module, configured to compare a light intensity of a current environment with a light intensity threshold set by the terminal system; an image acquisition switching module, configured to reduce a light intensity in the current environment Obtaining an image preset by the terminal when the light intensity set by the terminal system is wide; the video call module is configured to send the preset image to a receiver currently communicating with the terminal; and acquire real-time video image of the terminal
  • the device is configured to obtain a light intensity of a current environment acquired by the light sensor, and compare a light intensity of the current environment with a light intensity threshold set by the terminal system, if the light intensity of the current environment is lower than the If the light intensity set by the terminal system is wide, the preset image of the terminal is obtained. And transmitting the preset image to a recipient currently
  • the preset image of the terminal includes a video stream intercepted by the terminal during a video call or a picture stored by the terminal.
  • the light intensity acquiring module specifically includes: a light acquiring module, configured to acquire light of a current environment; a light converting module, configured to convert light of a current environment into a corresponding level signal; and a light intensity matching module, configured to The correspondence between the level signal and the light intensity matches the light intensity of the current environment.
  • the light intensity acquiring module periodically acquires the light intensity of the current environment according to the time value set by the terminal system.
  • the present invention can ensure the quality of the video call under the condition of weak light, save the power, improve the user experience, and facilitate the promotion of the video terminal.
  • FIG. 1 is a flowchart of a method for acquiring a real-time video image of a terminal according to an embodiment of the present invention
  • 2 is a structural diagram of a device for acquiring a real-time video image of a terminal according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for acquiring a real-time video image of a terminal according to an embodiment of the present invention.
  • step S101 when acquiring the real-time video image, the terminal acquires the light intensity of the current environment.
  • the terminal obtains the light of the current environment through the internal light sensor, converts the light of the current environment into a corresponding level signal, and generally converts into an international unit of standard illumination: Lex lux, that is, the illumination The luminous flux per unit area, and the light intensity analysis by floating point data (such as 320.5. Because different level signals are for different light intensities, according to the correspondence between the level signal and the light intensity, it can match the current environment. Light intensity.
  • step S102 the light intensity of the current environment is compared with the light intensity threshold set by the terminal system to determine whether the light intensity of the current environment is lower than the light intensity set by the terminal system: if the light intensity of the current environment is lower than the terminal If the light intensity of the current environment is greater than or equal to the light intensity threshold set by the terminal system, step S104 is performed.
  • the light intensity threshold value may be a value defined by a macro in the code, such as 501ux, if it is set by the terminal system, according to the position ID of the file corresponding to the light intensity threshold, The light intensity threshold is read from the corresponding file, and the light intensity of the current environment analyzed by the light sensor is compared with the light intensity threshold.
  • the light corresponding to the light intensity value is a reference light for ensuring the basic definition of the video call. Once the light of the current environment is lower than the reference light, the video picture is unclear and affects the quality of the video call.
  • step S103 an image preset by the terminal is acquired.
  • the preset image of the terminal includes the second video stream intercepted by the terminal during the video call or the picture stored by the terminal, and may also be other image formats, which are not listed here.
  • the preset image is saved in a fixed position in the terminal file.
  • the terminal system will The location information of the second video stream or the picture is saved in the setting item; when the preset second video stream or picture is to be acquired, the location information of the second video stream or the picture in the setting item is first read, and then Reading the data at a fixed location can obtain a corresponding second video stream or picture.
  • step S104 the camera of the control terminal acquires a live video image.
  • step S105 the acquired image is transmitted to the recipient currently communicating with the terminal.
  • the terminal controls the camera device (such as a camera) to take in real-time video images, and the terminal invokes the camera interface through the software program, and opens the camera.
  • the first video stream of the real-time video image that the camera starts to capture and obtain, and the obtained first video stream is placed in the storage space in the memory, and the real-time video image acquired by the camera is updated in the first place in the storage space in real time.
  • the terminal sends the first video stream obtained by the camera to the receiver that communicates with the terminal;
  • the terminal turns off the camera, stops the video capture, and stops reading the first video stream obtained by the camera from the storage space; meanwhile, the terminal The preset second video stream or picture is taken out from the terminal file system according to the location information of the image preset by the system, and the obtained second video stream or picture is sent to the receiver that communicates with the terminal.
  • the terminal switches the real-time video image and the preset image according to the light intensity of the current environment, and flexibly switches the screen between the real-time video image and the preset image when the current ambient light state changes, ensuring that the receiver always Can see a clear video call screen.
  • the terminal software has a global variable to save the current image category. Whether it is a live video image or a preset image, the global variable is assigned a corresponding value after the image category is switched.
  • the terminal periodically obtains the light intensity of the current environment according to the time value set by the system, for example, monitoring the current light intensity every 1 second, when the current light intensity is found to be insufficient, and the global variable of the current image category is "live video."
  • the terminal will adjust the manner of acquiring the image accordingly.
  • the embodiment of the present invention can ensure the quality of the video call in the case of weak light, and, because the real-time video image is no longer acquired by the camera device when the current ambient light is weak, the preset image of the terminal is taken as real-time. Video images are sent, thus greatly saving power.
  • FIG. 2 is a diagram showing the structure of a real-time video image acquiring apparatus for a terminal according to an embodiment of the present invention.
  • the light intensity acquiring module 21 acquires the current environment when the terminal acquires the real-time video image. Light intensity. Specifically, the light intensity obtaining module 21 includes:
  • a light acquiring module 211 configured to acquire light of a current environment
  • the light conversion module 212 is configured to convert the light of the current environment into a corresponding level signal.
  • the light intensity matching module 213 is configured to match the light intensity of the current environment according to the correspondence between the level signal and the light intensity.
  • the light intensity judging module 22 compares the light intensity of the current environment with the light intensity threshold set by the terminal system:
  • the image acquisition switching module 23 acquires the preset image of the terminal from the storage module 24, and the video call module 25 acquires the preset acquired by the image acquisition switching module 23.
  • the image is sent to a receiver that is currently in communication with the terminal, where the storage module 24 stores an image preset by the terminal system;
  • the image acquisition switching module 23 controls the camera of the terminal to acquire the real-time video image
  • the video call module 25 transmits the real-time video image obtained by the camera to the current terminal. The recipient of the communication.
  • the preset image of the terminal includes the second video stream intercepted by the terminal during the video call or the picture stored by the terminal, and may of course be other forms of images, which are not listed here.
  • FIG. 3 shows a structure of a terminal provided by an embodiment of the present invention, including a light sensor 31, and a terminal real-time video image acquiring device 32 provided by the embodiment of the present invention.
  • the light sensor 31 senses the light intensity of the current environment
  • the terminal real-time video image acquiring device 32 obtains the light intensity of the current environment sensed by the light sensor 31, and compares the light intensity of the current environment with the light intensity threshold set by the terminal system, if the light intensity of the current environment is lower than the terminal system. If the set light intensity is wide, the preset image of the terminal is obtained, and the preset image is sent to the receiver currently communicating with the terminal.
  • the embodiment of the invention can ensure the quality of the video call under the condition of weak light, saves the power source, improves the user experience, and facilitates the promotion of the video terminal.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Studio Devices (AREA)
  • Telephonic Communication Services (AREA)

Description

一种终端实时视频图像获取方法和装置
【技术领域】
本发明涉及视频技术领域， 特别涉及一种终端实时视频图像获取方法和装 置。
【背景技术】
随着视频技术的不断普及， 用户对视频通话过程中的通信质量要求也越来 越高。
在 3G 时代， 手机的视频通话功能被进一步的推广， 人们可以通过 QQ、 MSN或 Skype的视频聊天功能连接手机， 可以实时实地的与远方的亲人、 朋友 "面对面"地聊天。 当使用 3G手机拨打视频电话时， 不需要再是把手机放在耳 边， 而是面对手机， 再戴上有线耳麦或蓝牙耳麦， 会在手机屏幕上看到对方影 像， 用户也会被录制下来并传送给对方。 视频通话越来越多的被广大的客户使 用， 目前通过视频电话可以向对方发送动态视频信息， 以及音频信息， 达到了 很好的交流效果。
但是在使用过程中， 在某些情况下， 往往由于光线太暗使得视频通话的画 面不好或者无法看到画面， 不仅影响了视频通话的效果， 而且由于在看不清图 像的情况下仍在进行实时视频图像的获取， 极大的浪费了电源。
如何在光线较弱的情况下保证视频通话的质量， 节省电源， 提升用户的体 验感， 是视频技术领域研究的方向之一。
【发明内容】
本发明所要解决的技术问题是提供一种终端实时视频图像获取方法和装 置， 以在光线较弱的情况下保证视频通话的质量， 节省电源， 提升用户的体验 感。
本发明为解决技术问题而釆用的技术方案是提供一种终端实时视频图像获 取方法， 所述方法包括以下步骤： 获取当前环境的光线并将其转化为相应的电 平信号， 并根据所述电平信号与光线强度的对应关系， 以匹配获取当前环境的 光线强度； 将当前环境的光线强度与所述终端系统设置的光线强度阔值进行对 比； 若所述当前环境的光线强度低于所述终端系统设置的光线强度阔值， 则获 取所述终端预设的图像， 并将所述预设的图像发送至当前与所述终端进行通信 的接收方； 若所述当前环境的光线强度大于或者等于所述终端系统设置的光线 强度阔值， 则控制所述终端的摄像装置获取实时视频图像。
其中， 所述终端预设的图像包括所述终端在视频通话过程中截取的视频流 或者所述终端存储的图片。
其中， 在获取当前环境的光线强度时， 根据终端系统设置的时间值周期性 的获取当前环境的光线强度。
本发明为解决技术问题而釆用的技术方案是提供另一种终端实时视频图像 获取方法， 所述方法包括以下步骤： 终端在获取实时视频图像时， 获取当前环 境的光线强度； 将当前环境的光线强度与所述终端系统设置的光线强度阔值进 行对比； 若所述当前环境的光线强度低于所述终端系统设置的光线强度阔值， 则获取所述终端预设的图像， 并将所述预设的图像发送至当前与所述终端进行 通信的接收方。
其中， 终端预设的图像包括终端在视频通话过程中截取的视频流或者终端 存储的图片。
其中， 所述终端在获取实时视频图像时， 获取当前环境的光线强度的步骤 具体包括： 获取当前环境的光线； 将当前环境的光线转化为相应的电平信号； 根据电平信号与光线强度的对应关系， 匹配当前环境的光线强度。
其中， 将当前环境的光线强度与终端系统设置的光线强度阔值进行对比的 步骤之后， 所述方法还包括： 若当前环境的光线强度大于或者等于终端系统设 置的光线强度阔值， 则控制终端的摄像装置获取实时视频图像。
其中， 在获取当前环境的光线强度时， 根据终端系统设置的时间值周期性 的获取当前环境的光线强度。
本发明为解决技术问题而釆用的技术方案是提供一种终端实时视频图像获 取装置， 所述装置包括： 光线强度获取模块， 用于在终端获取实时视频图像时， 获取当前环境的光线强度； 光线强度判断模块， 用于将当前环境的光线强度与 终端系统设置的光线强度阔值进行对比； 图像获取切换模块， 用于在当前环境 的光线强度低于终端系统设置的光线强度阔值时， 获取终端预设的图像； 视频 通话模块， 用于将预设的图像发送至当前与终端进行通信的接收方。
其中， 终端预设的图像包括终端在视频通话过程中截取的视频流或者终端 存储的图片。
其中， 光线强度获取模块具体包括： 光线获取模块， 用于获取当前环境的 光线； 光线转换模块， 用于将当前环境的光线转化为相应的电平信号； 光线强 度匹配模块， 用于根据电平信号与光线强度的对应关系， 匹配当前环境的光线 强度。
其中， 所述光线强度获取模块根据终端系统设置的时间值周期性的获取当 前环境的光线强度。
本发明为解决技术问题而釆用的技术方案是提供一种终端， 包括： 光感应 器， 用于感应当前环境的光线； 光线强度获取模块， 用于在终端获取实时视频 图像时， 获取当前环境的光线强度； 光线强度判断模块， 用于将当前环境的光 线强度与所述终端系统设置的光线强度阔值进行对比； 图像获取切换模块， 用 于在所述当前环境的光线强度低于所述终端系统设置的光线强度阔值时， 获取 所述终端预设的图像； 视频通话模块， 用于将所述预设的图像发送至当前与所 述终端进行通信的接收方； 终端实时视频图像获取装置， 用于获取所述光感应 器获取的当前环境的光线强度， 将当前环境的光线强度与所述终端系统设置的 光线强度阔值进行对比， 若所述当前环境的光线强度低于所述终端系统设置的 光线强度阔值， 则获取所述终端预设的图像， 并将所述预设的图像发送至当前 与所述终端进行通信的接收方。
其中， 所述终端预设的图像包括所述终端在视频通话过程中截取的视频流 或者所述终端存储的图片。
其中， 所述光线强度获取模块具体包括： 光线获取模块， 用于获取当前环 境的光线； 光线转换模块， 用于将当前环境的光线转化为相应的电平信号； 光 线强度匹配模块， 用于根据电平信号与光线强度的对应关系， 匹配当前环境的 光线强度。
其中， 所述光线强度获取模块根据终端系统设置的时间值周期性的获取当 前环境的光线强度。
通过以上实施例， 本发明能够在光线较弱的情况下保证视频通话的质量， 还节省了电源， 提升了用户的体验感， 利于视频终端的推广。
【附图说明】
图 1是本发明实施例提供的终端实时视频图像获取方法的流程图; 图 2是本发明实施例提供的终端实时视频图像获取装置的结构图； 图 3是本发明实施例提供的终端的结构图。
【具体实施方式】
下面结合附图和实施例对本发明进行详细说明。
图 1示出了本发明实施例提供的终端实时视频图像获取方法的流程。
在步骤 S101中， 终端在获取实时视频图像时， 获取当前环境的光线强度。 在具体实施过程中， 终端通过内部的光感应器获取当前环境的光线， 将当 前环境的光线转化为相应的电平信号， 一般转化为标准的照明度的国际单位： 勒克司 lux, 即照射到单位面积上的光通量， 并以浮点型数据（譬如 320.5 进 行光线强度分析。 由于不同的电平信号对于不同的光线强度， 因此根据电平信 号与光线强度的对应关系， 可以匹配到当前环境的光线强度。
在步骤 S102中， 将当前环境的光线强度与终端系统设置的光线强度阔值进 行对比， 判断当前环境的光线强度是否低于终端系统设置的光线强度阔值： 若当前环境的光线强度低于终端系统设置的光线强度阔值，进行步骤 S103; 若当前环境的光线强度大于或者等于终端系统设置的光线强度阔值， 进行 步骤 S104。
其中， 光线强度阔值除了由终端系统设置外， 还可以是在代码中用宏定义 的数值， 譬如 501ux, 如果是终端系统设置的， 则根据光线强度阔值在文件所对 应的位置 ID, 将光线强度阔值从相应的文件中读出， 并将光感应器分析出的当 前环境的光线强度与光线强度阔值进行比较。
其中， 光线强度阔值对应的光线， 为保证视频通话时基本清晰度的一个基 准光线， 一旦当前环境的光线低于该基准光线， 则将导致视频画面不清晰， 影 响视频通话质量。
在步骤 S103中， 获取终端预设的图像。
优选的， 终端预设的图像包括终端在视频通话过程中截取的第二视频流或 者终端存储的图片， 当然也可以是其它的图像形式， 此处不——列举。
其中， 预设的图像保存于终端文件中固定位置， 当用户通过终端预设图像 时， 在选择文件中的一段视频通话过程中截取的第二视频流或图片后， 终端系 统就会将该第二视频流或图片的位置信息保存在设置项中； 当要获取预设的第 二视频流或者图片时， 首先读出设置项中第二视频流或图片的位置信息， 再在 固定位置读取数据即可得到对应的第二视频流或者图片。
在步骤 S104中， 控制终端的摄像装置获取实时视频图像。
在步骤 S105中， 将获取的图像发送至当前与终端进行通信的接收方。
其中， 当光线符合视频通话的要求， 即光线强度大于或者等于光线强度阔 值时， 终端通过控制摄像装置 （譬如摄像头）进行实时视频图像的摄取， 终端 通过软件程序调用摄像头接口， 并打开摄像头， 摄像头开始摄像并获得的实时 视频图像的第一视频流， 将获得的第一视频流放在内存中的存储空间中， 并随 着摄像头所获取的实时视频图像实时地更新该存储空间中的第一视频流， 终端 将摄像头获得的第一视频流发送与该终端进行通讯的接收方；
当光线不符合视频通话的要求， 即光线强度低于光线强度阔值时， 终端关 闭摄像装置， 停止视频的摄取， 并停止从存储空间中读取摄像装置获得的第一 视频流； 同时， 终端根据系统预设的图像的位置信息从终端文件系统中取出预 设的第二视频流或者图片， 并将获得的第二视频流或者图片发送与该终端进行 通讯的接收方。
本发明实施例中， 终端会根据当前环境的光线强度切换实时视频图像与预 设的图像， 在当前环境光线状态发生改变时灵活的在实时视频图像与预设的图 像切换画面， 保证接收方始终能看到清晰的视频通话画面。
在具体实施过程中， 不管是当前光线强度由符合视频通话变为不符合视频 通话， 还是当前光线强度由不符合视频通话变为符合视频通话， 终端的软件中 有一个全局变量保存当前的图像类别是实时视频图像还是预设的图像， 该全局 变量在图像类别发生切换后被赋予相应的值。
其中， 终端根据系统设置的时间值周期性的获取当前环境的光线强度， 譬 如每过 1 秒监测一次当前的光线强度， 当发现当前的光线强度不够， 并且当前 图像类别的全局变量是 "实时视频图像"， 或者， 当发现当前的光线强度充足， 并且当前图像类别的全局变量是 "预设的图像"， 则说明光线状态发生了改变， 此时， 终端将相应的调整获取图像的方式。
显然， 本发明实施例能够在光线较弱的情况下保证视频通话的质量， 而且， 由于在当前环境光线较弱时不再通过摄像装置获取实时视频图像， 而是将终端 预设的图像作为实时视频图像发送， 因此极大的节省了电源。
图 2示出了本发明实施例提供的终端实时视频图像获取装置的结构。
其中， 在终端获取实时视频图像时， 光线强度获取模块 21获取当前环境的 光线强度。 具体的， 光线强度获取模块 21包括：
光线获取模块 211 , 用于获取当前环境的光线；
光线转换模块 212, 用于将当前环境的光线转化为相应的电平信号； 光线强度匹配模块 213 , 用于根据电平信号与光线强度的对应关系， 匹配当 前环境的光线强度。
光线强度判断模块 22将当前环境的光线强度与终端系统设置的光线强度阔 值进行对比：
在当前环境的光线强度低于终端系统设置的光线强度阔值时， 图像获取切 换模块 23从存储模块 24中获取终端预设的图像， 视频通话模块 25将图像获取 切换模块 23获取的预设的图像发送至当前与终端进行通信的接收方， 其中， 存 储模块 24存储终端系统预设的图像；
在当前环境的光线强度大于或者等于终端系统设置的光线强度阔值时， 图 像获取切换模块 23 控制终端的摄像装置获取实时视频图像， 视频通话模块 25 将摄像装置获取实时视频图像发送至当前与终端进行通信的接收方。
优选的， 终端预设的图像包括终端在视频通话过程中截取的第二视频流或 者终端存储的图片， 当然也可以是其它形式的图像， 此处不——列举。
关于本发明实施例提供的终端实时视频图像获取装置的原理请参阅上文针 对终端实时视频图像获取方法的流程， 此处不在赘述。
图 3示出了本发明实施例提供的终端的结构， 包括光感应器 31 , 还包括本 发明实施例提供的终端实时视频图像获取装置 32。
其中， 光感应器 31感应当前环境的光线强度；
终端实时视频图像获取装置 32获取光感应器 31感应到的当前环境的光线 强度， 将当前环境的光线强度与终端系统设置的光线强度阔值进行对比， 若当 前环境的光线强度低于所终端系统设置的光线强度阔值， 则获取终端预设的图 像， 并将预设的图像发送至当前与终端进行通信的接收方。
关于终端实时视频图像获取装置 32的具体的工作过程请参阅上文描述， 此 处不再赘述。
本发明实施例能够在光线较弱的情况下保证视频通话的质量， 还节省了电 源， 提升了用户的体验感， 利于视频终端的推广。
在上述实施例中， 仅对本发明进行了示范性描述， 但是本领域技术人员在 阅读本专利申请后可以在不脱离本发明的精神和范围的情况下对本发明进行各 种修改。

Claims

权 利 要求
1、一种终端实时视频图像获取方法， 其特征在于， 所述方法包括以下步骤： 获取当前环境的光线并将其转化为相应的电平信号， 并根据所述电平信号 与光线强度的对应关系， 以匹配获取当前环境的光线强度；
将当前环境的光线强度与所述终端系统设置的光线强度阔值进行对比； 若所述当前环境的光线强度低于所述终端系统设置的光线强度阔值， 则获 取所述终端预设的图像， 并将所述预设的图像发送至当前与所述终端进行通信 的接收方； 若所述当前环境的光线强度大于或者等于所述终端系统设置的光线 强度阔值， 则控制所述终端的摄像装置获取实时视频图像。
2、 如权利要求 1所述的终端实时视频图像获取方法， 其特征在于， 所述终 端预设的图像包括所述终端在视频通话过程中截取的视频流或者所述终端存储 的图片。
3、 如权利要求 1所述的终端实时视频图像获取方法， 其特征在于， 在获取 当前环境的光线强度时， 根据终端系统设置的时间值周期性的获取当前环境的 光线强度。
4、一种终端实时视频图像获取方法， 其特征在于， 所述方法包括以下步骤： 终端在获取实时视频图像时， 获取当前环境的光线强度；
将当前环境的光线强度与所述终端系统设置的光线强度阔值进行对比； 若所述当前环境的光线强度低于所述终端系统设置的光线强度阔值， 则获 取所述终端预设的图像， 并将所述预设的图像发送至当前与所述终端进行通信 的接收方。
5、 如权利要求 4所述的终端实时视频图像获取方法， 其特征在于， 所述终 端预设的图像包括所述终端在视频通话过程中截取的视频流或者所述终端存储 的图片。
6、 如权利要求 4所述的终端实时视频图像获取方法， 其特征在于， 所述终 端在获取实时视频图像时， 获取当前环境的光线强度的步骤具体包括：
获取当前环境的光线；
将当前环境的光线转化为相应的电平信号；
根据电平信号与光线强度的对应关系， 匹配当前环境的光线强度。
7、 如权利要求 4所述的终端实时视频图像获取方法， 其特征在于， 将当前 环境的光线强度与所述终端系统设置的光线强度阔值进行对比的步骤之后， 所 述方法还包括：
若所述当前环境的光线强度大于或者等于所述终端系统设置的光线强度阔 值， 则控制所述终端的摄像装置获取实时视频图像。
8、 如权利要求 4所述的终端实时视频图像获取方法， 其特征在于， 在获取 当前环境的光线强度时， 根据终端系统设置的时间值周期性的获取当前环境的 光线强度。
9、 一种终端实时视频图像获取装置， 其特征在于， 所述装置包括： 光线强度获取模块， 用于在终端获取实时视频图像时， 获取当前环境的光 线强度；
光线强度判断模块， 用于将当前环境的光线强度与所述终端系统设置的光 线强度阈值进行对比；
图像获取切换模块， 用于在所述当前环境的光线强度低于所述终端系统设 置的光线强度阔值时， 获取所述终端预设的图像；
视频通话模块， 用于将所述预设的图像发送至当前与所述终端进行通信的 接收方。
10、 如权利要求 9 所述的终端实时视频图像获取装置， 其特征在于， 所述 终端预设的图像包括所述终端在视频通话过程中截取的视频流或者所述终端存 储的图片。
11、 如权利要求 9 所述的终端实时视频图像获取装置， 其特征在于， 所述 光线强度获取模块具体包括：
光线获取模块， 用于获取当前环境的光线；
光线转换模块， 用于将当前环境的光线转化为相应的电平信号；
光线强度匹配模块， 用于根据电平信号与光线强度的对应关系， 匹配当前 环境的光线强度。
12、 如权利要求 9 所述的终端实时视频图像获取装置， 其特征在于， 所述 光线强度获取模块根据终端系统设置的时间值周期性的获取当前环境的光线强 度。
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